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swoole_coroutine.cc
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/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Xinyu Zhu <[email protected]> |
| shiguangqi <[email protected]> |
| Twosee <[email protected]> |
| Tianfeng Han <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php_swoole_cxx.h"
#include "server.h"
#include "swoole_coroutine_system.h"
#include "zend_builtin_functions.h"
#include "ext/spl/spl_array.h"
#include <unordered_map>
using swoole::coroutine::System;
using swoole::coroutine::Socket;
using swoole::Coroutine;
using swoole::PHPCoroutine;
using std::unordered_map;
#define PHP_CORO_TASK_SLOT ((int)((ZEND_MM_ALIGNED_SIZE(sizeof(php_coro_task)) + ZEND_MM_ALIGNED_SIZE(sizeof(zval)) - 1) / ZEND_MM_ALIGNED_SIZE(sizeof(zval))))
enum sw_exit_flags
{
SW_EXIT_IN_COROUTINE = 1 << 1,
SW_EXIT_IN_SERVER = 1 << 2
};
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_void, 0, 0, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_set, 0, 0, 1)
ZEND_ARG_INFO(0, options)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_create, 0, 0, 1)
ZEND_ARG_CALLABLE_INFO(0, func, 0)
ZEND_ARG_VARIADIC_INFO(0, params)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_resume, 0, 0, 1)
ZEND_ARG_INFO(0, cid)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_exists, 0, 0, 1)
ZEND_ARG_INFO(0, cid)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_getContext, 0, 0, 0)
ZEND_ARG_INFO(0, cid)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_defer, 0, 0, 1)
ZEND_ARG_INFO(0, callback)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_getBackTrace, 0, 0, 0)
ZEND_ARG_INFO(0, cid)
ZEND_ARG_INFO(0, options)
ZEND_ARG_INFO(0, limit)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_getPcid, 0, 0, 0)
ZEND_ARG_INFO(0, cid)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_coroutine_getElapsed, 0, 0, 0)
ZEND_ARG_INFO(0, cid)
ZEND_END_ARG_INFO()
bool PHPCoroutine::active = false;
swoole::coroutine::Config PHPCoroutine::config =
{
SW_DEFAULT_MAX_CORO_NUM,
0,
/* TODO: enable hook in v5.0.0 */
// SW_HOOK_ALL
false,
};
php_coro_task PHPCoroutine::main_task = {};
pthread_t PHPCoroutine::interrupt_thread_id;
bool PHPCoroutine::interrupt_thread_running = false;
static zend_bool* zend_vm_interrupt = nullptr;
static user_opcode_handler_t ori_exit_handler = nullptr;
static user_opcode_handler_t ori_begin_silence_handler = nullptr;
static user_opcode_handler_t ori_end_silence_handler = nullptr;
static unordered_map<long, Coroutine *> user_yield_coros;
static void (*orig_interrupt_function)(zend_execute_data *execute_data) = nullptr;
static void (*orig_error_function)(int type, const char *error_filename, const uint32_t error_lineno, const char *format, va_list args) = nullptr;
static zend_class_entry *swoole_coroutine_util_ce;
static zend_class_entry *swoole_exit_exception_ce;
static zend_object_handlers swoole_exit_exception_handlers;
static zend_class_entry *swoole_coroutine_iterator_ce;
static zend_class_entry *swoole_coroutine_context_ce;
static PHP_METHOD(swoole_coroutine, exists);
static PHP_METHOD(swoole_coroutine, yield);
static PHP_METHOD(swoole_coroutine, resume);
static PHP_METHOD(swoole_coroutine, stats);
static PHP_METHOD(swoole_coroutine, getCid);
static PHP_METHOD(swoole_coroutine, getPcid);
static PHP_METHOD(swoole_coroutine, getContext);
static PHP_METHOD(swoole_coroutine, getBackTrace);
static PHP_METHOD(swoole_coroutine, getElapsed);
static PHP_METHOD(swoole_coroutine, list);
static PHP_METHOD(swoole_coroutine, enableScheduler);
static PHP_METHOD(swoole_coroutine, disableScheduler);
static const zend_function_entry swoole_coroutine_util_methods[] =
{
/**
* Coroutine Core API
*/
ZEND_FENTRY(create, ZEND_FN(swoole_coroutine_create), arginfo_swoole_coroutine_create, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
ZEND_FENTRY(defer, ZEND_FN(swoole_coroutine_defer), arginfo_swoole_coroutine_defer, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_scheduler, set, arginfo_swoole_coroutine_set, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, exists, arginfo_swoole_coroutine_exists, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, yield, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_MALIAS(swoole_coroutine, suspend, yield, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, resume, arginfo_swoole_coroutine_resume, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, stats, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, getCid, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_MALIAS(swoole_coroutine, getuid, getCid, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, getPcid, arginfo_swoole_coroutine_getPcid, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, getContext, arginfo_swoole_coroutine_getContext, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, getBackTrace, arginfo_swoole_coroutine_getBackTrace, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, getElapsed, arginfo_swoole_coroutine_getElapsed, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, list, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_MALIAS(swoole_coroutine, listCoroutines, list, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, enableScheduler, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine, disableScheduler, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
/**
* Coroutine System API
*/
ZEND_FENTRY(gethostbyname, ZEND_FN(swoole_coroutine_gethostbyname), arginfo_swoole_coroutine_system_gethostbyname, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
ZEND_FENTRY(dnsLookup, ZEND_FN(swoole_async_dns_lookup_coro), arginfo_swoole_coroutine_system_dnsLookup, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, exec, arginfo_swoole_coroutine_system_exec, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, sleep, arginfo_swoole_coroutine_system_sleep, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, getaddrinfo, arginfo_swoole_coroutine_system_getaddrinfo, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, statvfs, arginfo_swoole_coroutine_system_statvfs, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, readFile, arginfo_swoole_coroutine_system_readFile, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, writeFile, arginfo_swoole_coroutine_system_writeFile, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, wait, arginfo_swoole_coroutine_system_wait, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, waitPid, arginfo_swoole_coroutine_system_waitPid, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, waitSignal, arginfo_swoole_coroutine_system_waitSignal, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(swoole_coroutine_system, waitEvent, arginfo_swoole_coroutine_system_waitEvent, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
/* Deprecated file methods */
PHP_ME(swoole_coroutine_system, fread, arginfo_swoole_coroutine_system_fread, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC | ZEND_ACC_DEPRECATED)
PHP_ME(swoole_coroutine_system, fgets, arginfo_swoole_coroutine_system_fgets, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC | ZEND_ACC_DEPRECATED)
PHP_ME(swoole_coroutine_system, fwrite, arginfo_swoole_coroutine_system_fwrite, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC | ZEND_ACC_DEPRECATED)
PHP_FE_END
};
/**
* Exit Exception
*/
static PHP_METHOD(swoole_exit_exception, getFlags);
static PHP_METHOD(swoole_exit_exception, getStatus);
static const zend_function_entry swoole_exit_exception_methods[] =
{
PHP_ME(swoole_exit_exception, getFlags, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_exit_exception, getStatus, arginfo_swoole_coroutine_void, ZEND_ACC_PUBLIC)
PHP_FE_END
};
static int coro_exit_handler(zend_execute_data *execute_data)
{
zval ex;
zend_object *obj;
zend_long flags = 0;
if (Coroutine::get_current())
{
flags |= SW_EXIT_IN_COROUTINE;
}
if (sw_server() && sw_server()->gs->start)
{
flags |= SW_EXIT_IN_SERVER;
}
if (flags)
{
const zend_op *opline = EX(opline);
zval _exit_status;
zval *exit_status = NULL;
if (opline->op1_type != IS_UNUSED)
{
if (opline->op1_type == IS_CONST)
{
// see: https://github.com/php/php-src/commit/e70618aff6f447a298605d07648f2ce9e5a284f5
#ifdef EX_CONSTANT
exit_status = EX_CONSTANT(opline->op1);
#else
exit_status = RT_CONSTANT(opline, opline->op1);
#endif
}
else
{
exit_status = EX_VAR(opline->op1.var);
}
if (Z_ISREF_P(exit_status))
{
exit_status = Z_REFVAL_P(exit_status);
}
ZVAL_DUP(&_exit_status, exit_status);
exit_status = &_exit_status;
}
else
{
exit_status = &_exit_status;
ZVAL_NULL(exit_status);
}
obj = zend_throw_error_exception(swoole_exit_exception_ce, "swoole exit", 0, E_ERROR);
ZVAL_OBJ(&ex, obj);
zend_update_property_long(swoole_exit_exception_ce, &ex, ZEND_STRL("flags"), flags);
Z_TRY_ADDREF_P(exit_status);
zend_update_property(swoole_exit_exception_ce, &ex, ZEND_STRL("status"), exit_status);
}
return ZEND_USER_OPCODE_DISPATCH;
}
static int coro_begin_silence_handler(zend_execute_data *execute_data)
{
php_coro_task *task = PHPCoroutine::get_task();
task->in_silence = true;
task->ori_error_reporting = EG(error_reporting);
return ZEND_USER_OPCODE_DISPATCH;
}
static int coro_end_silence_handler(zend_execute_data *execute_data)
{
php_coro_task *task = PHPCoroutine::get_task();
task->in_silence = false;
return ZEND_USER_OPCODE_DISPATCH;
}
static void coro_interrupt_resume(void *data)
{
Coroutine *co = (Coroutine *) data;
if (co && !co->is_end())
{
swTraceLog(SW_TRACE_COROUTINE, "interrupt_callback cid=%ld ", co->get_cid());
co->resume();
}
}
static void coro_interrupt_function(zend_execute_data *execute_data)
{
php_coro_task *task = PHPCoroutine::get_task();
if (task && task->co && PHPCoroutine::is_schedulable(task))
{
swoole_event_defer(coro_interrupt_resume, (void *) task->co);
task->co->yield();
}
if (orig_interrupt_function)
{
orig_interrupt_function(execute_data);
}
}
void PHPCoroutine::init()
{
Coroutine::set_on_yield(on_yield);
Coroutine::set_on_resume(on_resume);
Coroutine::set_on_close(on_close);
}
void PHPCoroutine::deactivate(void *ptr)
{
PHPCoroutine::interrupt_thread_stop();
/**
* reset runtime hook
*/
PHPCoroutine::disable_hook();
config.hook_flags = 0;
zend_interrupt_function = orig_interrupt_function;
zend_error_cb = orig_error_function;
active = false;
}
inline void PHPCoroutine::activate()
{
if (sw_unlikely(active))
{
return;
}
if (zend_hash_str_find_ptr(&module_registry, ZEND_STRL("xdebug")))
{
php_swoole_fatal_error(E_WARNING, "Using Xdebug in coroutines is extremely dangerous, please notice that it may lead to coredump!");
}
/* init reactor and register event wait */
php_swoole_check_reactor();
/* replace interrupt function */
orig_interrupt_function = zend_interrupt_function;
zend_interrupt_function = coro_interrupt_function;
/* replace the error function to save execute_data */
orig_error_function = zend_error_cb;
zend_error_cb = error;
if (SWOOLE_G(enable_preemptive_scheduler) || config.enable_preemptive_scheduler)
{
/* create a thread to interrupt the coroutine that takes up too much time */
interrupt_thread_start();
}
if (config.hook_flags)
{
enable_hook(config.hook_flags);
}
/**
* deactivate when reactor free.
*/
swReactor_add_destroy_callback(SwooleTG.reactor, deactivate, nullptr);
active = true;
}
void PHPCoroutine::error(int type, const char *error_filename, const uint32_t error_lineno, const char *format, va_list args)
{
if (sw_unlikely(type & E_FATAL_ERRORS))
{
if (active)
{
/* update the last coroutine's info */
save_task(get_task());
}
swoole_event_free();
}
if (sw_likely(orig_error_function))
{
orig_error_function(type, error_filename, error_lineno, format, args);
}
}
void PHPCoroutine::shutdown()
{
interrupt_thread_stop();
Coroutine::bailout(nullptr);
}
void PHPCoroutine::interrupt_thread_stop()
{
if (!interrupt_thread_running)
{
return;
}
interrupt_thread_running = false;
if (pthread_join(interrupt_thread_id, NULL) < 0)
{
swSysWarn("pthread_join(%ld) failed", (ulong_t )interrupt_thread_id);
interrupt_thread_running = true;
}
}
void PHPCoroutine::interrupt_thread_start()
{
if (interrupt_thread_running)
{
return;
}
zend_vm_interrupt = &EG(vm_interrupt);
interrupt_thread_running = true;
if (pthread_create(&interrupt_thread_id, NULL, (void * (*)(void *)) interrupt_thread_loop, NULL) < 0)
{
swSysError("pthread_create[PHPCoroutine Scheduler] failed");
interrupt_thread_running = false;
}
}
void PHPCoroutine::interrupt_thread_loop()
{
static const useconds_t interval = (MAX_EXEC_MSEC / 2) * 1000;
swSignal_none();
while (interrupt_thread_running)
{
*zend_vm_interrupt = 1;
usleep(interval);
}
pthread_exit(0);
}
inline void PHPCoroutine::vm_stack_init(void)
{
uint32_t size = SW_DEFAULT_PHP_STACK_PAGE_SIZE;
zend_vm_stack page = (zend_vm_stack) emalloc(size);
page->top = ZEND_VM_STACK_ELEMENTS(page);
page->end = (zval*) ((char*) page + size);
page->prev = NULL;
EG(vm_stack) = page;
EG(vm_stack)->top++;
EG(vm_stack_top) = EG(vm_stack)->top;
EG(vm_stack_end) = EG(vm_stack)->end;
#if PHP_VERSION_ID >= 70300
EG(vm_stack_page_size) = size;
#endif
}
inline void PHPCoroutine::vm_stack_destroy(void)
{
zend_vm_stack stack = EG(vm_stack);
while (stack != NULL)
{
zend_vm_stack p = stack->prev;
efree(stack);
stack = p;
}
}
/**
* The meaning of the task argument in coro switch functions
*
* create: origin_task
* yield: current_task
* resume: target_task
* close: current_task
*
*/
inline void PHPCoroutine::save_vm_stack(php_coro_task *task)
{
#ifdef SW_CORO_SWAP_BAILOUT
task->bailout = EG(bailout);
#endif
task->vm_stack_top = EG(vm_stack_top);
task->vm_stack_end = EG(vm_stack_end);
task->vm_stack = EG(vm_stack);
#if PHP_VERSION_ID >= 70300
task->vm_stack_page_size = EG(vm_stack_page_size);
#endif
task->execute_data = EG(current_execute_data);
task->error_handling = EG(error_handling);
task->exception_class = EG(exception_class);
task->exception = EG(exception);
if (UNEXPECTED(BG(array_walk_fci).size != 0))
{
if (!task->array_walk_fci)
{
task->array_walk_fci = (php_swoole_fci *) emalloc(sizeof(*task->array_walk_fci));
}
memcpy(task->array_walk_fci, &BG(array_walk_fci), sizeof(*task->array_walk_fci));
memset(&BG(array_walk_fci), 0, sizeof(*task->array_walk_fci));
}
if (UNEXPECTED(task->in_silence))
{
task->tmp_error_reporting = EG(error_reporting);
EG(error_reporting) = task->ori_error_reporting;
}
}
inline void PHPCoroutine::restore_vm_stack(php_coro_task *task)
{
#ifdef SW_CORO_SWAP_BAILOUT
EG(bailout) = task->bailout;
#endif
EG(vm_stack_top) = task->vm_stack_top;
EG(vm_stack_end) = task->vm_stack_end;
EG(vm_stack) = task->vm_stack;
#if PHP_VERSION_ID >= 70300
EG(vm_stack_page_size) = task->vm_stack_page_size;
#endif
EG(current_execute_data) = task->execute_data;
EG(error_handling) = task->error_handling;
EG(exception_class) = task->exception_class;
EG(exception) = task->exception;
if (UNEXPECTED(task->array_walk_fci && task->array_walk_fci->fci.size != 0))
{
memcpy(&BG(array_walk_fci), task->array_walk_fci, sizeof(*task->array_walk_fci));
task->array_walk_fci->fci.size = 0;
}
if (UNEXPECTED(task->in_silence))
{
EG(error_reporting) = task->tmp_error_reporting;
}
}
inline void PHPCoroutine::save_og(php_coro_task *task)
{
if (OG(handlers).elements)
{
task->output_ptr = (zend_output_globals *) emalloc(sizeof(zend_output_globals));
memcpy(task->output_ptr, SWOG, sizeof(zend_output_globals));
php_output_activate();
}
else
{
task->output_ptr = NULL;
}
}
inline void PHPCoroutine::restore_og(php_coro_task *task)
{
if (task->output_ptr)
{
memcpy(SWOG, task->output_ptr, sizeof(zend_output_globals));
efree(task->output_ptr);
task->output_ptr = NULL;
}
}
void PHPCoroutine::save_task(php_coro_task *task)
{
save_vm_stack(task);
save_og(task);
}
void PHPCoroutine::restore_task(php_coro_task *task)
{
restore_vm_stack(task);
restore_og(task);
}
void PHPCoroutine::on_yield(void *arg)
{
php_coro_task *task = (php_coro_task *) arg;
php_coro_task *origin_task = get_origin_task(task);
swTraceLog(SW_TRACE_COROUTINE,"php_coro_yield from cid=%ld to cid=%ld", task->co->get_cid(), task->co->get_origin_cid());
save_task(task);
restore_task(origin_task);
}
void PHPCoroutine::on_resume(void *arg)
{
php_coro_task *task = (php_coro_task *) arg;
php_coro_task *current_task = get_task();
save_task(current_task);
restore_task(task);
record_last_msec(task);
swTraceLog(SW_TRACE_COROUTINE,"php_coro_resume from cid=%ld to cid=%ld", Coroutine::get_current_cid(), task->co->get_cid());
}
void PHPCoroutine::on_close(void *arg)
{
php_coro_task *task = (php_coro_task *) arg;
php_coro_task *origin_task = get_origin_task(task);
#ifdef SW_LOG_TRACE_OPEN
long cid = task->co->get_cid();
long origin_cid = task->co->get_origin_cid();
#endif
if (SwooleG.hooks[SW_GLOBAL_HOOK_ON_CORO_STOP])
{
swoole_call_hook(SW_GLOBAL_HOOK_ON_CORO_STOP, task);
}
if (OG(handlers).elements)
{
if (OG(active))
{
php_output_end_all();
}
php_output_deactivate();
php_output_activate();
}
if (task->array_walk_fci)
{
efree(task->array_walk_fci);
}
vm_stack_destroy();
restore_task(origin_task);
swTraceLog(
SW_TRACE_COROUTINE, "coro close cid=%ld and resume to %ld, %zu remained. usage size: %zu. malloc size: %zu",
cid, origin_cid, (uintmax_t) Coroutine::count() - 1, (uintmax_t) zend_memory_usage(0), (uintmax_t) zend_memory_usage(1)
);
}
void PHPCoroutine::main_func(void *arg)
{
#ifdef SW_CORO_SUPPORT_BAILOUT
zend_first_try {
#endif
int i;
php_coro_args *php_arg = (php_coro_args *) arg;
zend_fcall_info_cache fci_cache = *php_arg->fci_cache;
zend_function *func = fci_cache.function_handler;
zval *argv = php_arg->argv;
int argc = php_arg->argc;
php_coro_task *task;
zend_execute_data *call;
zval _retval, *retval = &_retval;
if (fci_cache.object)
{
GC_ADDREF(fci_cache.object);
}
vm_stack_init();
call = (zend_execute_data *) (EG(vm_stack_top));
task = (php_coro_task *) EG(vm_stack_top);
EG(vm_stack_top) = (zval *) ((char *) call + PHP_CORO_TASK_SLOT * sizeof(zval));
#if PHP_VERSION_ID < 70400
call = zend_vm_stack_push_call_frame(
ZEND_CALL_TOP_FUNCTION | ZEND_CALL_ALLOCATED,
func, argc, fci_cache.called_scope, fci_cache.object
);
#else
do {
uint32_t call_info;
void *object_or_called_scope;
if ((func->common.fn_flags & ZEND_ACC_STATIC) || !fci_cache.object) {
object_or_called_scope = fci_cache.called_scope;
call_info = ZEND_CALL_TOP_FUNCTION | ZEND_CALL_DYNAMIC;
} else {
object_or_called_scope = fci_cache.object;
call_info = ZEND_CALL_TOP_FUNCTION | ZEND_CALL_DYNAMIC | ZEND_CALL_HAS_THIS;
}
call = zend_vm_stack_push_call_frame(call_info, func, argc, object_or_called_scope);
} while (0);
#endif
for (i = 0; i < argc; ++i)
{
zval *param;
zval *arg = &argv[i];
if (Z_ISREF_P(arg) && !(func->common.fn_flags & ZEND_ACC_CALL_VIA_TRAMPOLINE))
{
/* don't separate references for __call */
arg = Z_REFVAL_P(arg);
}
param = ZEND_CALL_ARG(call, i + 1);
ZVAL_COPY(param, arg);
}
call->symbol_table = NULL;
if (func->op_array.fn_flags & ZEND_ACC_CLOSURE)
{
uint32_t call_info;
GC_ADDREF(ZEND_CLOSURE_OBJECT(func));
call_info = ZEND_CALL_CLOSURE;
ZEND_ADD_CALL_FLAG(call, call_info);
}
#if defined(SW_CORO_SWAP_BAILOUT) && !defined(SW_CORO_SUPPORT_BAILOUT)
EG(bailout) = NULL;
#endif
EG(current_execute_data) = call;
EG(error_handling) = EH_NORMAL;
EG(exception_class) = NULL;
EG(exception) = NULL;
task->output_ptr = NULL;
task->array_walk_fci = NULL;
task->in_silence = false;
task->co = Coroutine::get_current();
task->co->set_task((void *) task);
task->defer_tasks = nullptr;
task->pcid = task->co->get_origin_cid();
task->context = nullptr;
task->enable_scheduler = 1;
save_vm_stack(task);
record_last_msec(task);
swTraceLog(
SW_TRACE_COROUTINE, "Create coro id: %ld, origin cid: %ld, coro total count: %zu, heap size: %zu",
task->co->get_cid(), task->co->get_origin_cid(), (uintmax_t) Coroutine::count(), (uintmax_t) zend_memory_usage(0)
);
if (SwooleG.hooks[SW_GLOBAL_HOOK_ON_CORO_START])
{
swoole_call_hook(SW_GLOBAL_HOOK_ON_CORO_START, task);
}
if (EXPECTED(func->type == ZEND_USER_FUNCTION))
{
ZVAL_UNDEF(retval);
// TODO: enhancement it, separate execute data is necessary, but we lose the backtrace
EG(current_execute_data) = NULL;
#if PHP_VERSION_ID >= 70200
zend_init_func_execute_data(call, &func->op_array, retval);
#else
zend_init_execute_data(call, &func->op_array, retval);
#endif
zend_execute_ex(EG(current_execute_data));
}
else /* ZEND_INTERNAL_FUNCTION */
{
ZVAL_NULL(retval);
call->prev_execute_data = NULL;
call->return_value = NULL; /* this is not a constructor call */
execute_internal(call, retval);
zend_vm_stack_free_args(call);
}
if (task->defer_tasks)
{
std::stack<php_swoole_fci *> *tasks = task->defer_tasks;
while (!tasks->empty())
{
php_swoole_fci *defer_fci = tasks->top();
tasks->pop();
defer_fci->fci.param_count = 1;
defer_fci->fci.params = retval;
if (UNEXPECTED(sw_zend_call_function_anyway(&defer_fci->fci, &defer_fci->fci_cache) != SUCCESS))
{
php_swoole_fatal_error(E_WARNING, "defer callback handler error");
}
sw_zend_fci_cache_discard(&defer_fci->fci_cache);
efree(defer_fci);
}
delete task->defer_tasks;
task->defer_tasks = nullptr;
}
// resources release
if (task->context)
{
zend_object *context = task->context;
task->context = (zend_object *) ~0;
OBJ_RELEASE(context);
}
if (fci_cache.object)
{
OBJ_RELEASE(fci_cache.object);
}
zval_ptr_dtor(retval);
// TODO: exceptions will only cause the coroutine to exit
if (UNEXPECTED(EG(exception)))
{
zend_exception_error(EG(exception), E_ERROR);
}
#ifdef SW_CORO_SUPPORT_BAILOUT
} zend_catch {
Coroutine::bailout([](){
swoole_event_free();
sw_zend_bailout();
});
} zend_end_try();
#endif
}
long PHPCoroutine::create(zend_fcall_info_cache *fci_cache, uint32_t argc, zval *argv)
{
if (sw_unlikely(Coroutine::count() >= config.max_num))
{
php_swoole_fatal_error(E_WARNING, "exceed max number of coroutine %zu", (uintmax_t) Coroutine::count());
return SW_CORO_ERR_LIMIT;
}
if (sw_unlikely(!fci_cache || !fci_cache->function_handler))
{
php_swoole_fatal_error(E_ERROR, "invalid function call info cache");
return SW_CORO_ERR_INVALID;
}
zend_uchar type = fci_cache->function_handler->type;
if (sw_unlikely(type != ZEND_USER_FUNCTION && type != ZEND_INTERNAL_FUNCTION))
{
php_swoole_fatal_error(E_ERROR, "invalid function type %u", fci_cache->function_handler->type);
return SW_CORO_ERR_INVALID;
}
if (sw_unlikely(!active))
{
activate();
}
php_coro_args php_coro_args;
php_coro_args.fci_cache = fci_cache;
php_coro_args.argv = argv;
php_coro_args.argc = argc;
save_task(get_task());
return Coroutine::create(main_func, (void*) &php_coro_args);
}
void PHPCoroutine::defer(php_swoole_fci *fci)
{
php_coro_task *task = get_task();
if (task->defer_tasks == nullptr)
{
task->defer_tasks = new std::stack<php_swoole_fci *>;
}
task->defer_tasks->push(fci);
}
void PHPCoroutine::yield_m(zval *return_value, php_coro_context *sw_current_context)
{
php_coro_task *task = get_task();
sw_current_context->current_coro_return_value_ptr = return_value;
sw_current_context->current_task = task;
on_yield(task);
task->co->yield_naked();
}
int PHPCoroutine::resume_m(php_coro_context *sw_current_context, zval *retval, zval *coro_retval)
{
php_coro_task *task = sw_current_context->current_task;
on_resume(task);
if (retval)
{
ZVAL_COPY(sw_current_context->current_coro_return_value_ptr, retval);
}
task->co->resume_naked();
return SW_CORO_ERR_END;
}
void php_swoole_coroutine_minit(int module_number)
{
PHPCoroutine::init();
SW_INIT_CLASS_ENTRY_BASE(swoole_coroutine_util, "Swoole\\Coroutine", NULL, "Co", swoole_coroutine_util_methods, NULL);
SW_SET_CLASS_CREATE(swoole_coroutine_util, sw_zend_create_object_deny);
SW_INIT_CLASS_ENTRY_BASE(swoole_coroutine_iterator, "Swoole\\Coroutine\\Iterator", NULL, "Co\\Iterator", NULL, spl_ce_ArrayIterator);
SW_INIT_CLASS_ENTRY_BASE(swoole_coroutine_context, "Swoole\\Coroutine\\Context", NULL, "Co\\Context", NULL, spl_ce_ArrayObject);
SW_REGISTER_LONG_CONSTANT("SWOOLE_DEFAULT_MAX_CORO_NUM", SW_DEFAULT_MAX_CORO_NUM);
SW_REGISTER_LONG_CONSTANT("SWOOLE_CORO_MAX_NUM_LIMIT", SW_CORO_MAX_NUM_LIMIT);
SW_REGISTER_LONG_CONSTANT("SWOOLE_CORO_INIT", SW_CORO_INIT);
SW_REGISTER_LONG_CONSTANT("SWOOLE_CORO_WAITING", SW_CORO_WAITING);
SW_REGISTER_LONG_CONSTANT("SWOOLE_CORO_RUNNING", SW_CORO_RUNNING);
SW_REGISTER_LONG_CONSTANT("SWOOLE_CORO_END", SW_CORO_END);
//prohibit exit in coroutine
SW_INIT_CLASS_ENTRY_EX(swoole_exit_exception, "Swoole\\ExitException", NULL, NULL, swoole_exit_exception_methods, swoole_exception);
zend_declare_property_long(swoole_exit_exception_ce, ZEND_STRL("flags"), 0, ZEND_ACC_PRIVATE);
zend_declare_property_long(swoole_exit_exception_ce, ZEND_STRL("status"), 0, ZEND_ACC_PRIVATE);
SW_REGISTER_LONG_CONSTANT("SWOOLE_EXIT_IN_COROUTINE", SW_EXIT_IN_COROUTINE);
SW_REGISTER_LONG_CONSTANT("SWOOLE_EXIT_IN_SERVER", SW_EXIT_IN_SERVER);
if (SWOOLE_G(cli))
{
ori_exit_handler = zend_get_user_opcode_handler(ZEND_EXIT);
zend_set_user_opcode_handler(ZEND_EXIT, coro_exit_handler);
ori_begin_silence_handler = zend_get_user_opcode_handler(ZEND_BEGIN_SILENCE);
zend_set_user_opcode_handler(ZEND_BEGIN_SILENCE, coro_begin_silence_handler);
ori_end_silence_handler = zend_get_user_opcode_handler(ZEND_END_SILENCE);
zend_set_user_opcode_handler(ZEND_END_SILENCE, coro_end_silence_handler);
}
}
void php_swoole_coroutine_rshutdown()
{
PHPCoroutine::shutdown();
}
static PHP_METHOD(swoole_exit_exception, getFlags)
{
SW_RETURN_PROPERTY("flags");
}
static PHP_METHOD(swoole_exit_exception, getStatus)
{
SW_RETURN_PROPERTY("status");
}
PHP_FUNCTION(swoole_coroutine_create)
{
zend_fcall_info fci;
zend_fcall_info_cache fci_cache;
ZEND_PARSE_PARAMETERS_START(1, -1)
Z_PARAM_FUNC(fci, fci_cache)
Z_PARAM_VARIADIC('*', fci.params, fci.param_count)
ZEND_PARSE_PARAMETERS_END_EX(RETURN_FALSE);
if (sw_unlikely(SWOOLE_G(req_status) == PHP_SWOOLE_CALL_USER_SHUTDOWNFUNC_BEGIN))
{
zend_function *func = (zend_function *) EG(current_execute_data)->prev_execute_data->func;
if (func->common.function_name && sw_unlikely(memcmp(ZSTR_VAL(func->common.function_name), ZEND_STRS("__destruct")) == 0))
{
php_swoole_fatal_error(E_ERROR, "can not use coroutine in __destruct after php_request_shutdown");
RETURN_FALSE;
}
}
long cid = PHPCoroutine::create(&fci_cache, fci.param_count, fci.params);
if (sw_likely(cid > 0))
{
RETURN_LONG(cid);
}
else
{
RETURN_FALSE;
}
}
PHP_FUNCTION(swoole_coroutine_defer)
{
zend_fcall_info fci;
zend_fcall_info_cache fci_cache;
php_swoole_fci *defer_fci;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_FUNC(fci, fci_cache)
ZEND_PARSE_PARAMETERS_END_EX(RETURN_FALSE);
Coroutine::get_current_safe();
defer_fci = (php_swoole_fci *) emalloc(sizeof(php_swoole_fci));
defer_fci->fci = fci;
defer_fci->fci_cache = fci_cache;
sw_zend_fci_cache_persist(&defer_fci->fci_cache);
PHPCoroutine::defer(defer_fci);
}
PHP_METHOD(swoole_coroutine, stats)
{
array_init(return_value);
add_assoc_long_ex(return_value, ZEND_STRL("event_num"), SwooleTG.reactor ? SwooleTG.reactor->event_num : 0);
add_assoc_long_ex(
return_value, ZEND_STRL("signal_listener_num"),
SwooleTG.reactor ? (SwooleTG.reactor->signal_listener_num + SwooleTG.reactor->co_signal_listener_num) : 0
);
add_assoc_long_ex(return_value, ZEND_STRL("aio_task_num"), SwooleTG.aio_task_num);
add_assoc_long_ex(return_value, ZEND_STRL("aio_worker_num"), swAio_thread_count());
add_assoc_long_ex(return_value, ZEND_STRL("c_stack_size"), Coroutine::get_stack_size());
add_assoc_long_ex(return_value, ZEND_STRL("coroutine_num"), Coroutine::count());
add_assoc_long_ex(return_value, ZEND_STRL("coroutine_peak_num"), Coroutine::get_peak_num());
add_assoc_long_ex(return_value, ZEND_STRL("coroutine_last_cid"), Coroutine::get_last_cid());
}
PHP_METHOD(swoole_coroutine, getCid)
{
RETURN_LONG(PHPCoroutine::get_cid());
}
PHP_METHOD(swoole_coroutine, getPcid)
{
zend_long cid = 0;
zend_long ret;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(cid)
ZEND_PARSE_PARAMETERS_END_EX(RETURN_FALSE);
ret = PHPCoroutine::get_pcid(cid);
if (ret == 0)
{
RETURN_FALSE;
}
RETURN_LONG(ret);
}
PHP_METHOD(swoole_coroutine, getContext)
{
zend_long cid = 0;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(cid)
ZEND_PARSE_PARAMETERS_END_EX(RETURN_FALSE);
php_coro_task *task = (php_coro_task *) (EXPECTED(cid == 0) ? Coroutine::get_current_task() : Coroutine::get_task_by_cid(cid));
if (UNEXPECTED(!task))
{
RETURN_NULL();
}
if (UNEXPECTED(task->context == (zend_object *) ~0))
{
/* bad context (has been destroyed), see: https://github.com/swoole/swoole-src/issues/2991 */
php_swoole_fatal_error(E_WARNING, "Context of this coroutine has been destroyed");
RETURN_NULL();
}
if (UNEXPECTED(!task->context))
{
object_init_ex(return_value, swoole_coroutine_context_ce);
task->context = Z_OBJ_P(return_value);
}
GC_ADDREF(task->context);
RETURN_OBJ(task->context);
}